Joyner JNSZ1600DL, Руководство пользователя

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57
The size of valve guide and valve guide hole
Level
The valve
guide
hole The diameter
of ylinder
head tube hole
Press fit
clearance
Standard
13.555 0
-0.01
13.481-13.519
0.026-0.07
Oversize
14.305 0
-0.01
14.231-14.269
Oversize
14.505 0
-0.01
14.481-14.519
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9
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. Removal and installation of the piston and rod assembly
Fig.72 Fig.73 Fig.74
Removal: ——Remove the crankshaft to the bottom dead center of the cylinder. Check and make sure that
there is a cylinder mark on the connecting rod and its cap. or make a mark on each cylinder before removal.
——Remove the connecting rod bolts and remove the rod cap. Take the connecting rod bushing
out and stick on cylinder marks and labels on the upper or lower halves.
——Push the connecting rod and piston out of the cylinder with a hammer wood handle. Take the
piston and rod out. ——Remove the piston ring with a special tool or the piece of feeler gauge.
And make labels on each cylinder and upper and lower halves.
——Press the piston pin out of the piston hole and connecting rod small end with a press . Then
put the piston, piston ring and piston pin together.
Cleaning and inspection: ——Clean and remove the carbon deposits from the piston, piston ring and piston
pin.
——Clean and remove the carbon deposits from the upper cylinder bore.